//身份证号工具
const aIdentityCode_City = { // 城市代码列表  
    11: "北京",
    12: "天津",
    13: "河北",
    14: "山西",
    15: "内蒙古",
    21: "辽宁",
    22: "吉林",
    23: "黑龙江 ",
    31: "上海",
    32: "江苏",
    33: "浙江",
    34: "安徽",
    35: "福建",
    36: "江西",
    37: "山东",
    41: "河南",
    42: "湖北 ",
    43: "湖南",
    44: "广东",
    45: "广西",
    46: "海南",
    50: "重庆",
    51: "四川",
    52: "贵州",
    53: "云南",
    54: "西藏 ",
    61: "陕西",
    62: "甘肃",
    63: "青海",
    64: "宁夏",
    65: "新疆",
    71: "台湾",
    81: "香港",
    82: "澳门",
    91: "国外 "
}
export default class IdCardUtil {
    //检查号码是否符合规范，包括长度，类型  
    private static IdentityCode_isCardNo(card: string): boolean {
        var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X  
        if (reg.test(card) === false) {
            return false;
        }
        return true;
    }
    //取身份证前两位，校验省份    
    private static IdentityCode_checkProvince(card: string): boolean {
        var province = card.substr(0, 2);
        if (aIdentityCode_City[province] == undefined) {
            return false;
        }
        return true;
    }
    /**
     * 获取生日
     * @param card 
     */
    static getBirthDay(card: string): string {
        var len = card.length;
        //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字    
        if (len == 15) {
            var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;
            var arr_data = card.match(re_fifteen)!; // 正则取号码内所含出年月日数据  
            var year = arr_data[2];
            var month = arr_data[3];
            var day = arr_data[4];
            return `19${year}-${month}-${day}`
        }
        //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X    
        if (len == 18) {
            var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
            var arr_data = card.match(re_eighteen)!; // 正则取号码内所含出年月日数据  
            var year = arr_data[2];
            var month = arr_data[3];
            var day = arr_data[4];
            return `${year}-${month}-${day}`
        }
        return ''
    }

    private static IdentityCode_changeFivteenToEighteen(card: string): string { //15位转18位身份证号   
        if (card.length == 15) {
            var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
            var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
            var cardTemp = 0,
                card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6);
            for (var i = 0; i < 17; i++) {
                cardTemp += Number(card.substr(i, 1)) * arrInt[i];
            }
            card += arrCh[cardTemp % 11];
            return card;
        }
        return card;
    }

    /**
     * 获取性别
     * @param car 0-男 1-女
     */
    static getSex(card: string): number {
        var iCard = IdCardUtil.IdentityCode_changeFivteenToEighteen(card);
        if (parseInt(iCard.charAt(16)) % 2 == 0) {
            return 1
        } else {
            return 0
        }
    }

    private static IdentityCode_checkParity(card: string): boolean { //校验位的检测  
        card = IdCardUtil.IdentityCode_changeFivteenToEighteen(card); // 15位转18位    
        var len = card.length;
        if (len == 18) {
            var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
            var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
            var cardTemp = 0,
                i, valnum;
            for (i = 0; i < 17; i++) {
                cardTemp += Number(card.substr(i, 1)) * arrInt[i];
            }
            valnum = arrCh[cardTemp % 11];
            if (valnum == card.substr(17, 1)) {
                return true;
            }
            return false;
        }
        return false;
    }

    /**
     * 校验身份证号是否正确
     * @param card 
     * @returns 
     */
    static idCardValid(card: string): boolean {
        let pass = true;
        let sex = ''
        //是否为空    
        if (pass && card === '')
            pass = false;
        //校验长度，类型    
        if (pass && IdCardUtil.IdentityCode_isCardNo(card) === false)
            pass = false;
        //检查省份    
        if (pass && IdCardUtil.IdentityCode_checkProvince(card) === false)
            pass = false;
        //校验生日
        if (pass && IdCardUtil.IdentityCode_checkBirthday(card) === false)
            pass = false;
        //检验位的检测    
        if (pass && IdCardUtil.IdentityCode_checkParity(card) === false)
            pass = false;
        if (pass) {
            var iCard = IdCardUtil.IdentityCode_changeFivteenToEighteen(card);
            if (parseInt(iCard.charAt(16)) % 2 == 0) {
                sex = "0"; // 女生  
            } else {
                sex = "1"; // 男生  
            }
            return true
        } else {
            return false
        }
    }
    /**
     * 身份证脱敏(明文前后4位其他位用*替换)
     * @param card 
     * @returns 
     */
    static numberDesensitization(card: string): string {
        var len = card.length;
        if (len == 15) {
            var re_fifteen = /^(\d{4})(\d{7})(\d{4})$/;
            var arr_data = card.match(re_fifteen)!;
            return `${arr_data[1]}*******${arr_data[3]}`
        }
        if (len == 18) {
            var re_fifteen = /^(\d{4})(\d{10})(\d{4})$/;
            var arr_data = card.match(re_fifteen)!;
            return `${arr_data[1]}**********${arr_data[3]}`
        }
        return ''
    }

    private static IdentityCode_verifyBirthday(year, month, day, birthday) { //校验日期 ，15位以'19'年份来进行补齐。
        var now = new Date();
        var now_year = now.getFullYear();
        //年月日是否合理    
        if (birthday.getFullYear() == year &&
            (birthday.getMonth() + 1) == month &&
            birthday.getDate() == day) {
            //判断年份的范围（3岁到150岁之间)    
            var time = now_year - year;
            if (time >= 3 && time <= 150) {
                return true;
            }
            return false;
        }
        return false;
    }


    private static IdentityCode_checkBirthday(card) { //检查生日是否正确，15位以'19'年份来进行补齐。  
        var len = card.length;
        //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字    
        if (len == '15') {
            var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;
            var arr_data = card.match(re_fifteen); // 正则取号码内所含出年月日数据  
            var year = arr_data[2];
            var month = arr_data[3];
            var day = arr_data[4];
            var birthday = new Date('19' + year + '/' + month + '/' + day);
            return IdCardUtil.IdentityCode_verifyBirthday('19' + year, month, day, birthday);
        }
        //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X    
        if (len == '18') {
            var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
            var arr_data = card.match(re_eighteen); // 正则取号码内所含出年月日数据  
            var year = arr_data[2];
            var month = arr_data[3];
            var day = arr_data[4];
            var birthday = new Date(year + '/' + month + '/' + day);
            return IdCardUtil.IdentityCode_verifyBirthday(year, month, day, birthday);
        }
        return false;
    }
}